126 lines
5.2 KiB
Python
Executable file
126 lines
5.2 KiB
Python
Executable file
#!/bin/env python3
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# Copyright 2019 Google LLC
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#
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# Licensed under the the Apache License v2.0 with LLVM Exceptions (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://llvm.org/LICENSE.txt
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import argparse
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import json
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import os
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import subprocess
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import sys
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from typing import List, Optional
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from phabricator import Phabricator
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class ApplyPatch:
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def __init__(self, comment_file_path: str):
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# TODO: turn os.environ parameter into command line arguments
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# this would be much clearer and easier for testing
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self.comment_file_path = comment_file_path
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self.conduit_token = os.environ.get('CONDUIT_TOKEN') # type: Optional[str]
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self.host = os.environ.get('PHABRICATOR_HOST') # type: Optional[str]
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self._load_arcrc()
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self.diff_id = os.environ['DIFF_ID'] # type: str
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self.diff_json_path = os.environ['DIFF_JSON'] # type: str
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if not self.host.endswith('/api/'):
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self.host += '/api/'
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self.phab = Phabricator(token=self.conduit_token, host=self.host)
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self.git_hash = None # type: Optional[str]
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self.msg = [] # type: List[str]
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def _load_arcrc(self):
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"""Load arc configuration from file if not set."""
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if self.conduit_token is not None or self.host is not None:
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return
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print('Loading configuration from ~/.arcrc file')
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with open(os.path.expanduser('~/.arcrc'), 'r') as arcrc_file:
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arcrc = json.load(arcrc_file)
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# use the first host configured in the file
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self.host = next(iter(arcrc['hosts']))
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self.conduit_token = arcrc['hosts'][self.host]['token']
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def run(self):
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"""try to apply the patch from phabricator
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Write to `self.comment_file` for showing error messages on Phabricator.
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"""
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self.phab.update_interfaces()
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try:
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self._get_parent_hash()
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self._git_checkout()
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self._apply_patch()
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finally:
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self._write_error_message()
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def _get_parent_hash(self) -> str:
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diff = self.phab.differential.getdiff(diff_id=self.diff_id)
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# Keep a copy of the Phabricator answer for later usage in a json file
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try:
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with open(self.diff_json_path,'w') as json_file:
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json.dump(diff.response, json_file, sort_keys=True, indent=4)
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print('Wrote diff details to "{}".'.format(self.diff_json_path))
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except Exception:
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print('WARNING: could not write build/diff.json log file')
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self.git_hash = diff['sourceControlBaseRevision']
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def _git_checkout(self):
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try:
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print('Checking out git hash {}'.format(self.git_hash))
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subprocess.check_call('git reset --hard {}'.format(self.git_hash),
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stdout=sys.stdout, stderr=sys.stderr, shell=True)
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except subprocess.CalledProcessError:
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print('WARNING: checkout of hash failed, using master branch instead.')
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self.msg += [
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'Could not check out parent git hash "{}". It was not found in '
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'the repository. Did you configure the "Parent Revision" in '
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'Phabricator properly? Trying to apply the patch to the '
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'master branch instead...'.format(self.git_hash)]
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subprocess.check_call('git checkout master', stdout=sys.stdout,
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stderr=sys.stderr, shell=True)
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print('git checkout completed.')
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def _apply_patch(self):
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print('running arc patch...')
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cmd = 'arc patch --force --nobranch --no-ansi --diff "{}" --nocommit '\
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'--conduit-token "{}" --conduit-uri "{}"'.format(
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self.diff_id, self.conduit_token, self.host )
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result = subprocess.run(cmd, capture_output=True, shell=True, text=True)
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print(result.stdout + result.stderr)
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if result.returncode != 0:
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msg = (
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'ERROR: arc patch failed with error code {}. '
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'Check build log for details.'.format(result.returncode))
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self.msg += [msg]
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raise Exception(msg)
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print('Patching completed.')
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def _write_error_message(self):
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"""Write the log message to a file."""
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if self.comment_file_path is None:
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return
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if len(self.msg) == 0:
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return
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print('writing error message to {}'.format(self.comment_file_path))
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with open(self.comment_file_path, 'a') as comment_file:
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text = '\n\n'.join(self.msg)
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comment_file.write(text)
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(description='Apply Phabricator patch to working directory.')
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parser.add_argument('--comment-file', type=str, dest='comment_file_path', default=None)
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args = parser.parse_args()
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patcher = ApplyPatch(args.comment_file_path)
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patcher.run()
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